Travel controller for vehicles

Abstract

A running control device of a vehicle includes an engine with a plurality of cylinders, and a clutch connecting/disconnecting a power transmission path between the engine and wheels, the running control device of a vehicle performing during an inertia running mode a neutral inertia running mode performed with the power transmission path between the engine and the wheels disconnected while the engine is kept operated, and a cylinder resting inertia running mode performed by resting at least a part of the cylinders of the engine while the power transmission path between the engine and the wheels is connected, the running control device of a vehicle increasing an operation region of performing the neutral inertia running mode in an operation region of performing the inertia running mode when idle learning performed in an idle operation state of the engine is incomplete, as compared to after completion of the idle learning.

The invention claimed is: 
     
       1. A running control device of a vehicle including an engine with a plurality of cylinders, and a clutch connecting/disconnecting a power transmission path between the engine and wheels, the running control device of a vehicle performing during an inertia running mode
 a neutral inertia running mode performed with the power transmission path between the engine and the wheels disconnected while the engine is kept operated, and 
 a cylinder resting inertia running mode performed by resting at least a part of the cylinders of the engine while the power transmission path between the engine and the wheels is connected, 
 the running control device of a vehicle increasing an operation region of performing the neutral inertia running mode in an operation region of performing the inertia running mode when idle learning performed in an idle operation state of the engine is incomplete, as compared to after completion of the idle learning. 
 
     
     
       2. The running control device of a vehicle of  claim 1 , wherein when the idle learning is incomplete, an execution condition of the neutral inertia running mode is made easy to be satisfied as compared to after completion of the idle learning. 
     
     
       3. The running control device of a vehicle of  claim 1 , wherein when the idle learning is incomplete, an execution condition of the cylinder resting inertia running mode is made hard to be satisfied as compared to after completion of the idle learning. 
     
     
       4. The running control device of a vehicle of  claim 1 , wherein when deceleration learning is incomplete that is performed during fuel injection to the engine stopped and the engine passively rotated by the wheels, an operation region of performing the cylinder resting inertia running mode is increased in the operation region of performing the inertia running mode as compared to after completion of the deceleration learning.